Lateral motion device for railway car trucks



Oct. 6, 1931. M. H. MARTIN 1,826,476

v LATERAL MOTION DEVICE FOR RAILWAY CAR TRUCKS Filed Dec. 12. 1928 Patented Oct. 6, 1931 UNITED sT'AjtEs- PATENr OFI-'ics' MARK H. MARTIN, 0F READING, PENNSYLVANIA, BBIGNOR B0 Bm FOUNDRY & MACHINE COMPANY', O F 313.1383030, PENNSYLVANIA, A CORPORATION 0F PENNSYLVANIA.

Lamm nofnoiv namen ron RAILWAY cna raucxs application mea mmm; 12, 192s. semi no. '$25,495.

My invention relates to railway car trucks i and has particular relation to devices for permitting lengthwise motion of the bolsters laterally of such trucks.

The general'object of my invention is to provide means of novel character for permitting motion of a car truck bolster laterally of the v truck wherein chaling surfaces of 1 large area are afforded.

Another object of my invention isto provide a novel construction of means characterized by the provision of roller seat members having column guides provided thereon which guidespresent largebearing or chafing surfaces. A further object of my invention is to provide novel lateral motion devices for the bolster of a car truck which include roller seat members having column guides provided with large chafing surfaces, which surfaces are disposed in sliding engagement with'the bolster columns for guiding the bolster din vertical directions, the said guides being constructed and arranged to present large bearing or chaling surfaces to the sides of the bolster for guiding the latter and constituting means for stopping it in its'mov'ements laterally or transversely of the truck.

v Further objects and advantages of the in vention will be pointed out in the detailed description thereof which follows or willl become apparent as' the said description proceeds. f

In order that the invention may readily .be understood and its advantages from a practical standpoint appreciated, reference i should be had to the accompanying drawings I in which are illustrated certain embodiments be made inthe details of construction without departing from the principle of the said invention.

In the said drawings, v Fig. 1 isa view partly in elevation and kpartly in transverse section of the central novel lateral motion devices invented by me Y.

Fig. 2 is a view in vertical section taken on the line 2 2 of Fig. 1, one end portion of the bolster being shown in longitudinal sectioni Y Fig. 3 is a view taken on the line 3 3 of Fig. 2 showing the motion device in top plan and the column guides being shown in transverse section;

Fig. 4 1s a similar view including the said outer end portion of the truck bolster;

Fig. 5 is a view 1n horizontal longitudinal section showing a modiiied construction of device embodying the^invention; and

6 is a view in transverse section taken on the line 6 6 of Fig. 5.

The lateral motion devices'of my invention for the opposite ends or' the truck bolster are identical in construction and therefore I have illustrated and shall describe the invention wlth respect to only one end of the said bolster. f

. ln the drawings, 1 designates a side frame of(y known construction having spaced. bolster columns`2 which form the usual bolster window through which one of the outer ends ofthe bolster ,3 extends. It will be understood that a like window is located at the opposite side of the car truck frame through which 'the opposite end of the bolster projects. 'lrhe under side of the outer end portion of the bolster 3 has therein transversely extending recesses or channels 4 which are disposed above similar recesses or channels 5 provided in the top side of the roller seat and. spring cap member 6 which rests upon i the springs 7. '1`he .bottoms of these recesses or channels are curved transversely, as shown in Fig. 2. Rollers 8 are located within the recesses 4 and V5, as shown. rlhe rollers 8 are retained within the recesses or channels 4 and 5 by means of the outside j raised portions pr ribs 9 land the intermediate raised portions or ribs 10 and the stops or4 abutments 11 and 12, the said abutments being located in adjoining relation to theI opposite) ends of the rollers 8.` The transversely extending portions 9 and 10 and the side portion of a car truck embodying the longitudinally-extendingabutments 12 also 10e serve to the. spring cap member 6 between the front and rear'edges thereof, as.

will be obvious.

Formed prefer y integrall with the member 6 are vertkially exten g column guide'lugs 12 and intermediateY .webs 13. lhe dimensions of these guides are such as vto provide unusually large outer bearing or chaing Vsurfaces 14 which are disposed so as to permit slidingengagement of the member6 with the wear surfaces of the columns.

2 of the side frame. These guides extend to the ltop of the bolster,and as will be obvio they might be extended to greater heights desired. The interposition of they said.

' guides between the columns and-the sides of the bolster is permitted by providing a bolster the ends of' which are suiiicient'ly nareral movements thereby. a The extent 'to which the bolster may move laterally ci the truck is limited by stop lugs I6 provided thereon adjacent the outer ends of the said bolster, 'asshowm These lugs 16 engage the outer sides of the outer guide lugs 12 at the opposite sides of the truck upon lengthwise movement of the bolster in on'e direction o'ry the other laterally of the truck.

v Figs. 5 and 6, the column guides 20 provided In the modified construction shown in on the casting 6 are of rectangular shape in -cross section and extend'between guides or. flanges 21 formed on the columns 22. In allA other respects the construction shown in these ments or repairs, such removal may be elected by removing the springs from the' said side4 figures is substantially the same as that shown in Figs. 1 to 4, except that the distance between the outer ends of the stop lugs 16 upon the bolster is less than the distance between the upper portions of the bolster. columns. One advantage of this construction is thatif it should be desired to remove the side frame from the truck to make replaceframe, which will permit the roller seat casting to be lowered into position to disengage the column guides 20 froml the bolster. When this has been done the side frame may bek disconnected from the truck and removed without its being necessary to remove or disturb the bo It willbe seen that I have provided novel lateral motion devices wherein large bearin or chafng areas are formed. vCar trucks o known construction may be equipped with the devices invented by me at ow cost, and

when so equipped, the eciency and -the rereaders sistaceto wear of the said are greatly By the wordslateral motion employed in the specification and claims with respect to th'e bolster 1I .mean a movement or motion'v thecrleof -in'a direction transversely of the Having thus describedmy invention, what member having rollers thereon, a bolster the outer end of which rests upon the said rollers and is held in spaced relation to the top side of the said member, and column guides inte- .gral with said member and embracing the vopposite sides of the end portions of said bolj ster and .constituting the sole chafmg means therefor.

2. ln a railway car truck, a roller seat In-a railway carl truck, a roller seat Iclaim desire togecure by Letters Patent -f j member having rollers thereon, abolster an outer end of which rests upon said rollers, and column guides integral with said member and being located between the bolster co1- umns and the sides of the said bolster and extending upwardly to a plane approximately coincident with the plane of the top Aof the adjoining e'nd portion oi said bolster.

3. In a railway car truck, a roller seat member for supporting one endo a bolster,

rollers supported on said member upon which said end of said bolster rests and column guides integrally connected with said mem- Yloer and having inner and outer chaiing surfaces of a height approximately equal to the combined thickness of said rollers and saidl end of said bolster.

4. In a railway car truck, a springcap and roller seat member having guides formed integrally therewith, said guides having outer column chaling surfaces and inner bolster chaing surfaces, saidL guides. extending throughout approximately the entire width 'of the adjoining portions of said bolster.

5.- In a railway car truck, a roller seat vmember having rollers thereon, parallel guides integral with and extending upward- 1y from the said member, and a bolster an outer end portion of which extends between the said guides and rests upon the said rollers, the `tops of said guides being approximately flush with the top surface of the adjoining end portion of said bolster.

6l In a railway'car truck, a roller seat and spring cap member having rollers thereon, column gui/des formed integrally with the said member, and a 'bolster one end of which extends between said guides, the said guides having column and bolster chang surfaces of lar e area,the tops of said guides and the top es of the chaing surfaces thereof being located in approximatelgoush relation to the adjoining end ofsaid lster. s

7. In a railway car truck, a spring cap and roller seat member having` guides formed f 30. less' than the width of the upper' portion of vchaiing surfaces which engage the columns A of the side frame of the said truck, chang surfaces which are -engaged by the said bolster, and the .said guides constituting stops with which engage the stop lugs of the said bolster upon lengthwise movement of the f latter'laterally of the said truck.

9. In a railway car truck, a side frame having .a bolster opening therein, springs located in said opening, a'roller seat and spring cap. member supported by said springs, said mem- -`ber havingcolumn guides formed thereon,

rollers resting on said member, and a bolster one end of which extends through said open'- ing and is supported upon said rollers, said bolster having outwardly projecting stop lugs formed on said end, the distance be tween the outer'ends of said stop .lugs being the said bolster opening. l0. In a railway car truck, a side frame having a bolster opening therein, springs' located in said opening a spring ca member mounted upon' and supported y said springs said member having column guides formed thereon and projecting upwardly therefrom, and a bolster one' end of which projects through the said openin and is supported by the said springs, said olster having outwardly projectlng stop lugs ormecL upon the opposite sides of said end, the distance between the outer `ends of'said stop lugsbeing less than the distance between the i opening. v

In testimony that Iclaim the foregoing as my linvention I have hereunto signed, my

name this 10th day of December, A. D. 1928.

MARK H. MARTIN.

opposite sides of the upper portion of said 

